1043400444020 has 24 divisors (see below), whose sum is σ = 2390335563168. Its totient is φ = 379418343200.

The previous prime is 1043400444007. The next prime is 1043400444041. The reversal of 1043400444020 is 204440043401.

It is a happy number.

It is a super-2 number, since 2×1043400444020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2371364426 + ... + 2371364865.

It is an arithmetic number, because the mean of its divisors is an integer number (99597315132).

Almost surely, 2^{1043400444020} is an apocalyptic number.

1043400444020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043400444020 is an abundant number, since it is smaller than the sum of its proper divisors (1346935119148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1043400444020 is a wasteful number, since it uses less digits than its factorization.

1043400444020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742729311 (or 4742729309 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1043400444020 its reverse (204440043401), we get a palindrome (1247840487421).

The spelling of 1043400444020 in words is "one trillion, forty-three billion, four hundred million, four hundred forty-four thousand, twenty".